Simple Machines

Created by lmeinhardt 

Upgrade to
remove ads

Simple Machine

A machine with few moving parts, making it easier to do work.

Work

The use of force to move an object.

Fulcrum

The fixed point on which a lever balances.

Force/Effort

A push or pull by one object on another, causes a change in motion.

Lever

A stiff bar that balances on a fulcrum.

Examples of Levers

Seesaw (1st)
Wheelbarrow (2nd)
Tweezers (3rd)

Wheel and Axle

A large wheel that rotates on a small rod.

Examples of a Wheel and Axle

Doorknob, car wheels

Pulley

A wheel with a groove in the rim and a rope, allowing the load to be lifted.

Examples of Pulleys

Flagpoles, blinds

Inclined Plane

A flat, slanted surface that allows heavy objects to be moved easily.

Examples of Inclined Planes

Bottom of a sink or bathtub
Ramps
Stairs
Ladder (leaned against a wall)

Wedge

two inclined planes put together back to back that are used for separating things

Examples of Wedges

Knife
Ax blade
Fork

Screw

An inclined plane wrapped around a cylinder or cone that is used to fasten. The spiraled inclined plane is called "threads"

Examples of screws

Jar lids
Bolts/screws

Gears

Used to transfer motion from one part of a machine to another. The teeth push them in opposite directions.

Examples of gears

Gears next to a bike pedal
Clocks

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set